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44 lines
928 B
C
44 lines
928 B
C
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/*
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* _sid.h
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*
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* Ullrich von Bassewitz, 22.09.1998
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*
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* Internal include file, do not use directly.
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*
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*/
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#ifndef __SID_H
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#define __SID_H
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/* Define a structure with the sid register offsets */
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struct __sid_voice {
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unsigned freq; /* Frequency */
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unsigned pw; /* Pulse width */
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unsigned char ctrl; /* Control register */
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unsigned char ad; /* Attack/decay */
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unsigned char sr; /* Sustain/release */
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};
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struct __sid {
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struct __sid_voice v1; /* Voice 1 */
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struct __sid_voice v2; /* Voice 2 */
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struct __sid_voice v3; /* Voice 3 */
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unsigned flt_freq; /* Filter frequency */
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unsigned char flt_ctrl; /* Filter control register */
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unsigned char amp; /* Amplitude */
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unsigned char ad1; /* A/D converter 1 */
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unsigned char noise; /* Noise generator */
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unsigned char read3; /* Value of voice 3 */
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};
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/* End of _sid.h */
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#endif
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